Airworthiness Directive · Amendment 39-11394 · Boeing Model 737 Series Airplanes
Boeing Model 737 Series Airplanes
Model 737 series airplanes, as listed in Boeing Service Bulletin 737-52-1128, dated April 22, 1999, or in Boeing Service Bulletin 737-52-1137, dated May 13, 1999; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 737 series airplanes, that requires a one-time detailed visual inspection of the upper decompression panel on the flight deck door to verify that a minimum overlap dimension exists, and corrective action, if necessary. This amendment is prompted by reports indicating that, during production, some upper decompression panels were installed incorrectly on the flight deck door. The actions specified by this AD are intended to detect an incorrectly installed upper decompression panel, which could cause the emergency exit panel on the flight deck door to become inoperable, thereby preventing crewmembers from performing essential duties during an emergency evacuation.
